Filtra

Swiss Center Ltd. (San Pietroburgo / Northwestern Federal District / Russia)
Nevsky Institute of Language & Culture (San Pietroburgo / Northwestern Federal District / Russia)
INTEX (Surgut / Ural Federal District / Russia)
Zlatoust (San Pietroburgo / Northwestern Federal District / Russia)
Deutsche Zentrale für Tourismus (Mosca / Central Federal District / Russia)
ILDI Voyages (San Pietroburgo / Northwestern Federal District / Russia)